Abstract
We investigate full-field detection-based maximum-likelihood sequence estimation
(MLSE) for chromatic dispersion compensation in 10 Gbit/s OOK optical communication
systems. Important design criteria are identified to optimize the system performance. It
is confirmed that approximately 50% improvement in transmission reach can be achieved
compared to conventional direct-detection MLSE at both 4 and 16 states. It is also shown
that full-field MLSE is more robust to the noise and the associated noise amplifications
in full-field reconstruction, and consequently exhibits better tolerance to nonoptimized
system parameters than full-field feedforward equalizer. Experiments over 124 km spans
of field-installed single-mode fiber without optical dispersion compensation using
full-field MLSE verify the theoretically predicted performance benefits.
© 2010 IEEE
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